Wall form construction



June 13, 1950 H. c. HILL WALL FORM CONSTRUCTION 4 SheeSY-Sheet 1 Filed May 12, 1.947

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June 13, 1950 H. c. HILL 2,511,584

WALL FORM CONSTRUCTION Filed May 12. 1947 4 Sheets-Sheet 2 66 .5' 'FV 66 60 2 60 5,2 SHQ-SI 5? gm //52 June 13, 1950 Filed May 12. 1947 H. C. HILL WALL FORM CONSTRUCTION 4 Sheets-Sheet I5 7M/EN TOR HAYDE/v C. H/LL By H15 Arromvsys June 13, 1 950 H. CHILL 2,511,584

WALL FORM CONSTRUCTION Filed May v12, 1947 4 Sheets-Sheet 4 P'- -v-H-A-v-I /50 m m m A n m l n *0% i @+B-1 Je? lle 'u Il m u E'//QQ g /lo u2 0 ZZ5 Patented June 13, 1950 UNITED STATE-s :PATENT OFFICE WALL FoRM CONSTRUCTION Hayden ofniu, Alhambra, oaiif. .opplicanonMay 1947, serial No. 747,539

My invention relates-generally to-demountable structures such asfiorms used :inA the-.erectionyoi ,concrete structures: and 'is-concerned primarily with forms of a character suitable for providing a mold 'for shaping concrete .poured during the erection of structural walls.`

Oneobjectof the inventioniis-to provides. form for rpoured concrete which includesfa series *of interlocking vertical panels adaptedto be .readily assembled in Aside-by-side relationship yto--obtain a form of required :lengthi fand-detachable' mea-ns for retaining the panels-inthis relationship-and adequately reinorcing the same yin theiry entire vertical andhorizontaldirectionsto effect maximum 4streng-th Yand rigidity.

i VAnother object is to provide a fdemou-ntable .and interlocking tor'm ofy the-'character referredy to, which is adapted for nsein-the.-erection of all flat, vertical concrete walls-,0f predeterminedanduniform thickness,-lv fand none4 which employs righ-tangular inside -corner pa-nels havin-grelatively narrow sides for forming .thought-angular intersections abetween adjoining walls, outside `corner. panels whichvare used in 'conjunction with the inside corner panels to form right-angular corners in a wall, and ende-.panels adapted=-tofbe5dis posed across the end-s 1of lopposite* parallel `sirle panels in position; tojfform the end 4of either an outer for inner concrete wa11;

Another object is to .provide a. forml of thetype referred .to in-whichfseveral of the -types of panels mentioned above lareso proportioned in width that the algebraic sum-of= the width .oil-aside wall panely andthe proposed wall thickness :has -defimite and consistent fratiosbetween the vwidth of-a side or leg-of anzinside corner panel, between .the width` otaside or leg of anY outside corner panel and between` the widthofda lsidefor leg. -ot an end wallipanel. ySince the -widths'foffseveral of -the types` of panelsv 4are directly. proportionalto one and the same vthing);.thatisfthe algebraicrsum of thewidth of .a sidewall paneltand .the proposedv width of wall; they .areidirectly proportional to one .another .and Vthus may. be substituted, zone flor another?, in `forming concrete walls. or lpar-` titions having. rigli'tvanglar. turns. `ells or extensions with-p'ositive.,assurancelthat .the ,panels will properly 'interlock inerect'ing, forms of -various lengths and shapes. By this important provision, it is .possible to .assenible the form in` such a, manner that a concrete partition wall mayifbe erected between parallel' walls v.andlat 'true 'right angles thereto. c M .V I

. Another cibjectv @is to provide a' vle'rnountalile concrete forrno the' class indicated which the panels are braced in a yerticalrdirection by. detac'hable .studs and in 'which theiside, corner .and end walhpanel's arehl'dfin.assembledlrelationslip by 'horizontal.walesy the.` lengths. of the `wales 'lie-y ing4 directly proportional lt'oll Walll Vpanel widths,

so that the wales are interchangeable. By this provision, the lengths of the" various types of wales are standardized in accordance with the widths of the fdiierent .forms of` panels and, therefore, proportional to an algebraic equation of the-wall panel width .andthe thickness of the concretelwall to be^poured',so that the wales may be applied to use'ior effectively' connectingI the panels' together; regardless of theicontour which the form is to' Ifollow.

Another object is to provide a Vdemountable form of the type specified whichis composed of a. minimum number' of interlocking parts 4adapted for economical fabrication fromstandard structural materials and one'in whichthe several Vcomponents maybe readily setup `or assembled-at the site of the proposedv building structure without the use of special tools ore'quipment Another vobject to Vprov'ic'le a fdernou'ntable form comprisinglight yweight panels adapted `for easy handling and 'transporting and which may be quickly-'assembled to expedite the erection of the form and thereby reduce the'cost' of the structural walls 'toa Further objects of my invention will be apparent from the following specication and the drawings, in which:

Fig. V1 is a perspective view of a section of a demountable ,'lorm adapted to vsupport poured concrete .and .the likeandembodyingthe features ofvvmy invention;

Fig. .2 is a part-sectional plan View of a typical form assembly adapted to form intersections between right-angularly ,extending wa-11s;

Fig. .3 ris a part-sectionalplan View of -a typical form assembly adapted `to'form the corners of a building wall; l

Fig. 4is a part-,sectional plan view of atypical form assembly adapted -to form theend .of a wall;

Fig. 45" ai cross-'sectional .view taken on line 5 5 ofFig. 2;

Fig. 6 is-a vp1any'iew oi a typicall assembly oiside'pane'ls; insidecornerr-panels; outside corner panels yand end-panels, indicatingvthe relation between -lthe' widths' of these lpanels to each other and-to the -thickness'fof Athe concrete lwall-'to be formed;

Fig. 7 is a view similar to Fig. vos'howing the relation between-the -lengths'of the'different types of Wales and ithe` wdthsfof the different panels shown 'inFig 6;

Fig. A8 is an enlarged sectionalwiew-'t-hrough the abutting edges-'of two adjacent side panels, showing the overlapping or interlocking thereof;

Fig. `9 is cross-sectional view taken on line 9 5 'of 'Fig'. `3v 'and illustrating the manner in which the-wales lare interlocked .with portions of the panels tb retain the'latter in .assembledrelatitinslip.;l

Fig. is a fragmentary plan view of a portion of an inside corner Wale;

Fig. 11 is a cross section, taken on line of Fig. 10; y

Fig. 12 is a perspective view of one type of wale used to connect a series of side panels;

Fig. 13 is a perspective view of another type of wale employed for joining a pair of side panels;

Fig. 14 is a composite perspective View ofthe inside and outside corner wales;

Fig. 15 is a perspective view of wales used at the end of a wall;

Fig. 16 is a perspective view of a support or footing member used in lconjunction with diagonal braces;

Fig. 17 is a part-sectional side view of one type of diagonal brace. used. on the improved concrete form; v v .,Fig.. 18 is a view vof ano alternative form of brace;

Fig. 19 is a perspective view of a portion of one of the vertical studs, showing the. means for supportinga tie rod and two wales;

Fig. 20 is aperspective view of a clip element used for supporting a tie rodand side wall wales;

Fig. 21 is a cross-sectionalview,y taken on line 2 |-2 |y of Fig. 3; and v Fig. 22 vis a fragmentary cross-sectional view through ahollow wall structure in which the panels are arranged in reverse position to locate the connecting elements within thewall.

My improved demountable or knock-down form for concretewall structures comprises, in general, a pluralityV of side wall panels adaptedY to be stood on end with their vertical edges abutting to vform a continuous planar surface, two such assemblies beingarran'ged in spaced parallel relation to providea channel or wall cavity there'- between for receiving concrete or the like which is poured thereinto to form the wall.` Specially constructed inner and outer corner panels are employed for'forming right-angular corners and the inner corner panels are also adapted for use in defining right-angular intersections between walls' or partitions. End wall panels'are also utilized for defining theends of a wall or partition; The various types of panels referred `to above may be assembled to provide forms capable of deningstructural walls or partitions, or a combinationy of both, vhaving right-angular turns or extensions. The assemblies-providing the inner and outer sides or'mold Walls of the form are held in spaced-apart relation by means of tierods and by spaced vertical studs which have connecting portionsoverlying the top of the form. The individual panels of the structure are held in assembled relationship by means of horizontal rib-like members, commonly called wales which interlock with the panels. The horizontal wales and vertical studs thus serve to reinforce the panels and to retain them in proper connected relationship. The form is held in upright position by means of diagonal and horizontal braces or struts.

the form is made more universal in application and the use of adjustable panels, -connecting devices and substitute elements usually required in previous types of demountable forms is entirely avoided. f f

Referring to the drawings in detail, my improved demountable and knock-down form may assume various shapes, Fig. 1 showing the form erected in a manner so as to provide a mold and As a particular feature of improvement, my

temporary support for a typical outer building wall and an inner extension thereof which may be regardedas an internal partition wall. Since it is desirable that the details of construction of the form be illustrated relatively large scale, only a portion of the complete wall form is shown in Fig. 1, it being apparent that the form may be extended-to providea complete rectangular or irregularly shaped mold for the concrete or the like poured thereinto in erecting the outer walls and partitions of a house or other building. As shown most clearly in Fig. 1, the improved form consistsof an inner'mold wall 25 and an outer mold wall 26 which are arranged in spaced, parallel relationship 'to provide a wall cavity 21 therebetween for receiving concrete or the like which is poured into the cavity to form the wall of the house or other structure.

Each mold wall 25 and 26 includes a plurality of rectangular side-wall panels 30 which are disposed on end. Each panel 30 consists of a rectangular plate 3|, preferably fabricated from sheet metal and referred to hereinafter as the sheathing, and reinforcing elements 32 attached to the platesadjacent their horizontal and vertical edges. A.The elements 32 preferably are in the form of angle-irons Vand thus provide projecting upper and lower horizontal-ribs 33 and 34, respectively, and vertical side-ribs 35 and 36. As shown in Fig. 8, one of the vertical elements 32 of each wall panel 30 is spaced inwardly from the vertical edge of the sheathing plate 3| while its other vertical element-32 is so disposed that it overhangs the other' vertical Aedge of the plate 3|. By this provision, when the wall panels 30 are placed in juxtaposition, that is with their vertical edges and yribs 35 and 36abutting as shown in Fig. 8, they vertical seams between the sheathing plates `3| of adjacent wall panels are disposed out of alignment withv the 4line of joinder between the abutting ribs 35 and 36. When the wall panels 30 are assembled'in this manner, their sheathing plates 3| provide a smooth, continuous, planar surface for molding the poured concrete. The vertical ribs 35 and 36 of the wall panels 30 are provided with a plurality of vertically-spaced angular slots 38 having 'horizontal and vertical portions 39 and 40,`respectively (Fig. 9), these slots being adapted to receive means, to be described hereinafter, for retaining the panels in assembled relationship.` To facilitate dis-assembly of the side wall panels 30 after the poured concrete has set, I prefer to form .the side of each angle-iron 32 having the rib 36', with an arcuate surface as indicated at 4| in Fig. 8 so that each panel may be pivoted outwardly away from the formed concrete Awalland with respect to an adjacent panel. It will be observed, by,v reference to Fig. 5, that reinforcing elements 32'. which extend along the lower edge' of the panels 30 may be in the nature o f Z-irons and the lower edges of the panels may be cut back to provide recesses 42 for receiving strips v43 which are mounted upon the foundation slab 44 upon` which the concrete wall is to beerected, the strips being spaced apart at a distance corresponding with thef'thickness'of the sensei proposedwalt The. plateslof the wallpanels 30" are providedywithape. lires 45.11.01, the pur,- pose to be presently`r expla edg Means. are provided. for reiniorcinsthe. inner andouter moldwalls ZS'andSZSand. maintaining. them in parallel; spaced'fapartrelationship. Re: Terrine to. Fiss... 1,2;` and .19., studunitsassist. in this purpose, the units including spacedivertical studs 5I and 52'. a dapted to be disposed against the outer surfaces ofthe sheathing, plates; 3l ofV Opposite sidewall panels.. Eachofthe. vertical'studs 5I and 52 consists cfa pair of ,rec-il tansular metal stripswhicnare. held. in slightly. spaced relation by, means.,v f spacer'frivetsgt Riveted betweenthe. upper end.' or the.-strps ,Oia one stud l is ahorizontal element A5;?5adaptedit(). extend transversely across thetop of the wall cavity 21, the freeend of `the e1enient`having' a vertical slot 56 cut inv its upper edge. (Figi 5); After the stud 5I is placed against oneof'the side;v panels 3.o of theinner mold wall'zewith itsQate. tached element 55 extending across. the. mold cavity 21, the other stud 52;'.is yplaced,againsttheL opposite wall panel 3U,A that is the panelA ofthe. outer mold Wall 2 6, and its uppermpstv spacer-- rivet 5,4 hooked into the slot 56 to connect the parts of the stud unit 50; Adjacent ,their upper. and lower ends, the strips 5I a'11.l:l.l3. 5.2` are re cessed, as shown at 5Bjai1dj5! toprovideclearance for the ribs 33 and z firons 3.2. of the panels 30.

Angular, slotted' brackets 61] are vleldedjor otherwise secured tothe studs -.i'land 52 'at vertie cally spaced point therepn (Figs. 1, v3, 5 and' 1 99 and have vertical portions 63j abuttingthe outer edges of the studs and provided with square holes', 54",. When the stud units. 5 0, are appliedlto the form structure in the manner previouslyeli: plained,y the holes 64 align with theapertllles 459i, the side-wall panels. 30 ,of thel opposite. mold .walls `and 26 so that a tapered carriage bolt G5.` may be inserted through eachy of theseveral sets .of aligned holes and apertures, thebolts having. square portions fitting in the ,Squarehole 0j the brackets 651 on the inner stud, 52 anda. threaded end projecting from the brackets of. the outer stud 52. The bolts65'serveas tieslbetweentlie studs 5I and 52, nut-likehandles 66 being screwed' onto the threaded ends ofthe bolts to complete. the fasteningy (Fig. 3). Additionaltie-bolts '67' are also employed for the purposeoiresisting:

outward forces exertedY by the poured concrete against the side Wall panels theseqbolts being; applied in the manner to be later explained; Spac-` er sleeves 68 may be employedj on selecte`.d .tie` bolts 65'and` 61tomaintainthe 111016!Vi'alls..2 5 and 25 in spaced parallel relationship. as shownin Fig. 5.

In addition to being reinforced in a vertical direction by the, stud units the side wall" panels are strengthened and held together in interlocking relation byA means of metal-strips or; Wales. Various types of Wales are employedin the-present improvedconcrete form, thewale-T shownin detail in'Fig. 12 being used to connect* four successive sidewallpanels 30 'of'either rnol'd'j Wall 25 or Z. The Wale 'l0 Ahas threelongitudi nally spacer Teshapedslots 1I in one sidethereof, these slots being spaced, apart* a distance equal to the center-to-center-r distance between successive abutting vertical ribs ofthe side Wall` panels 39.' Extending across the narrow portion of each slot 1I yis a transverse locking1pn 12j."f lfd-l assembling the form structure, the tvaleslfarel first. placedagainst the outer surfacesorirnnjv correspondingselernents 32 .of theside wall-'panelssuccessive side. wall. panels. 30. with. the. pins. 12. entering thehorizontalportiops 3.9-01' the angu: lart slots .3in. each. pair. c.f."a.dioiningribs 35.. and 36. and the walesare then. slid' downwardly. to. dispose the` pins in, they verticalV portions 4 0 of thesldts, thusconnectine the. four. panelsnand providing. .lateral sunport1theref-or.. The over-air length of each. Wallelissuch that itsl ends .termie nate. at. thesides. o f successive stud units 511.' as. shown in. Fia.. 1. ,and LrestLunOn. a, horizontal; pore. tpnorthe angular. brackets. 60'.. Itis. thus. ap.- parent that the several'side Wall panel'sot the.. mold Walls, 2,5. and 2.6. areadequately. reinforced in avertilcalj directionby their. elements 32.` and the vertical studs 5I( and. 52j and in a horizontal, directi'onby the Wales 10 which also serve Ttoretain the panels ineonnectedg interlocking relationshp- The wales 1 0. are provided with nQtch'es. 154m the same edge in which the slots 1" are located; one notch.beng. .dsp0.sed midway between each pair. of slots as shown, in. Eig. 12.. Eacnrnotch 15. is adapted to receive a verticaL leg 1 6' ora .U- shaped clip, ,element 11, thehorizontaliportionof which underlie-sand extends transversely of the Wale,70. The other verticalle'leof the. clip element is slitand bent tcfprovide lateral Wings 19.adap ted.to. snap over the.. outer edge/of the Waleto retain .theelement in, place. .tljleredn,Y The legs 16. and 18 have. .aligned .holes 8B land 181;

which a ls o align Withtheapertures 4.5i of. the..

panels .3,9, and through which the carriage ,bolts 61, previously referred to may. be passedand. secured in-placefbyhandrnuts 82 as shownin.

Figs. 1 and 3, It is. thus apparent thatthelnold.'

a seriesv ofspaced holes 8 8,l any of which maybe alignedto receive pirrellsz wnicniserve to retain the parts; inlongtudinallyadiusted position, .T he. lower part 86 has a slot 9D adjacent its lowerend. adapted to be ,hookedoverl a, pin 9| carried'bv a footing. element 92. Theelenlentlhas. anointed verticalportion y9.3 (Fie. 16) adaptedtobe driven intorno-earth or intov awoodenplank .or the like extending, lengthwise. ofthe Wall.

part .8,1 also., has. .a slot. S4 adapted to hook over oneof .the spacer rivets 54 between the stripseofj thestud 5.2,.-

The ends ofthe walliforrn are adapted to be closerby end wa1lpanels95," which are shown most clearly in Figs. l" and 4; 'I 'he end wall panels 9,51 are of "Q -shape in cross section, having` opposite, parallel 'side members 96" connected by ay transverse end member 91: The members 9 6 and 91"rnay bemadefrom a single. sheet'oimetal sheathing. bent to the requiredshape:A vertical edges ofthe side members 96 are secured angle-irons 98Which are. adapted to abut-'the elements 32"ofj-'the side wall' panels S'when 4tire parts'of the form are `assembled as shiovm in Fig;

1. The sidemembers96`and'endmexnber 9'1 oftheendwallpanel 9,55 are also provided with anglefiron reinforcingeelements 99v at the upper and 'lower edges which form continuations of the 30; the elements atthe loweredges beingrecessed. to receive the locating strips 43;'v

The end Wall panels are held inconnectedA relationship; by .meansj of- Uasliaped Wales-v le@ Toy the asiste@ which are shown in detail in Figs. 4 and 15'. Each wale consists of a pair of parallel members |0| which are pivoted to the ends of a connecting member |02 by means of rivets |03. The members |0I each have a T-shaped slotl |04 provided with atransverse locking pin adapted to be disposed in the angular slots 38 of the endmost side wall pan'el 30 and similar' aligning slots in the reinforcing angles 98 of the side members 96. The wales |00 thus serve to strengthen the end wall panels 95 and retain them in assembled relationship.

As thus far described, the improved concrete form is adapted for use in making straight walls. It is within the concept of this invention, however, to provide means whereby the form may be erected in a manner to adapt it for use in form. ing concrete walls having right angular turns and extension, such an assembly being illustrated in Fig. 1. In order to produce the intersection between two right angularly related outside walls, I employ inside corner panels ||0 and outside corner panels Ill, the legs or sides of which are adapted to 'form continuations of the side wall panels 30 of the inner and outer mold walls 25 and 26, respectively. The inner corner panels have sheet metal sides or legs ||2 which are adapted to align with the sheathing of the inner mold wall 25 to define the inner intersection of the angular concrete wall. The sides ||2 are reinforced at their vertical and horizontal edges by angle iron elements ||3 in a manner similar to that in which the side wall panels are strengthened, the vertically disposed elements having angular slots aligning with the slots 3B in the innermost side wall panels 30. To lock the inner corner panel ||0 in position, I employ angular wales of the type shown at ||5 in Fig. 14. Each Wale ||5 consists of a pair of right angul larly related strips or legs IIB secured together by a rivet Each leg IIB has a T-shaped slot ||8 having a transverse locking pin ||9 adapted to be inserted into the aligned, angular slots of the innermost side wall panels 30 and inner corner panel ||0 to retain them in connected relationship.

The outside corner panels |I| comprise right angularly related sheet metal legs adapted to provide extensions of the sheathing of side wall panels 30 of the outer mold wall 26 as shown in Fig. 1. The panels have vertical reinforcing angles |2| adapted to abut the vertical elements 32 of the adjacent side wall panels 30 and horizontal angles |22 at their upper and lower edges, the vertical elements 2| having angular slots aligning with the slots 38 of the side wall panels referred to above. The outer corner panels are locked in assembled relationship by means of outerangular wales |23, shown in detail in Fig. 14. Each wale |23 has a pair of right-angularly related legs |24 connected by a rivet |25.V Each leg |24 has a T-shaped slot |26 provided with a transverse locking pin |21 adapted to engagel in the angular slots in the abutting vertical edges of the side wall panels 30 and outer corner panel to lock these panels together.

It will be apparent from the foregoing description and by reference to Fig. 1 that the inside and outside corner panels ||0 and |I| cooperate in defining the inner and outer intersections of the proposed concrete wall and that they are posi# tively locked in operative position by the wales ||5 and |23.

1* It is'sometimes desirable to form internal walls or partitions within the proposed building and it is the usual practice'to erect the forms of such walls during the construction of the outer wall forms so that all the walls may be formed during a single pouring of the lconcrete or like material. rlhe present improved concrete form is adapted to be assembled in a manner to produce such internalwalls, such a wall or partition being indicatedat |30 in Fig. 1. To assemble the form in 'amanner to obtain 4such an` internal wall, it is only necessary to omit one of the side wall panels 30 of the vinnermold wall 25 and employ a pair of the inside corner panels ||0 in its stead. The panels ||0 thus define, between them, the intersection ofthe outer and inner walls of the building and by adding the proper number of side wall panels 30 to the legs of the panels |I0 the length ofthe internal wall or partition I 30 may be established. As in the construction of the straight outside wall previously described, the end of the wall |30 may be,v defined by an end wall panel 95 and the several panels may be held together and reinforced by vertical stud units 50 and by thelhorizontal wales '10, I |5 and |00. When the partition wall |30 is spaced relatively close to a parallel portion of the outside wall, the use of a short wale |3| of the type shown in Fig. 13 may be necessary. Such a Wale is of a length equal to the distance between stud units 50 positioned at adjacent side wall panels 30 and has a single T-shaped slot |32 and locking pin |33 adapted to connect said adjacent side wall panels. It is desirable that the portion of the form shown at |30 be externally braced and this may be accomplished .by using props such as that designated by the vreference character |35 in Fig. 18. The prop |35 may consist of two vtelescopic members |36 and |31, each having a hooked end |38. A screw |39 .carried'by the member |31 may be tightened'against the member |36 to maintain the members in various positions of longitudinal adjustment. The ends of the members |36 and |31 may be hooked around selected spacer rivets 54 mounted on the stud units 50 of the outside and inside walls of the concrete form to brace thestructure in 'the' manner indicated at |40 in Figs. 1 and 5. It is customary in forming concrete walls to employ reinforcing rods to add strength thereto. Such rods usually have their lower ends embedded in the concrete foundation and project upwardly therefrom to be embedded in the poured concrete wall. Referring to Fig. l5, the present invention provides means for supporting the upper ends of such reinforcing rods `|4|, a clamping screw |42 being provided on the horizontalielements 55 of each stud unit 50 for receiving and holding the rods.

As a particular feature of my invention, theA widths of the various panels and the lengths of the different types of wales are proportioned in a novel. and unique manner so as to adapt the concrete. form to be constructed in many ways and in accordance with the proposed contour of the wall. lThat is to say, the panels and wales are so related that ,the different types of panels may be substituted, one for another, in erecting the form to vproduce a structure of desired shape and size and regardless ofthe manner of assembling the panels, Ithe wales may be utilized for locking the panels in connected relationship. This desirable result is attained by making the widths of the corner panels and the end wall panels, and the lengths of the .wales in certain proportions of the algebraic sumfof the thickness of the proposed to'Figs. 6 and '7 of 'the' drawings, the important and critical' dimensions V'ofthe various types of panels and' wales 'are-designated by reference letters, :the description and values of which are as Width of-an 'inside `corner panel 1eg,'or

V.Af-C'- 2 Thickness of proposedwall Width oran outside corner panel leg, or

Bel-C, or A;

Width of ari-end wall Apanel leg. r :13, kor y A:fr-oaJpn-pacata; Over-all length of an inside corner wale leg,

or.=1/2A+B-Q /gP, .or

:Kee-:Beamte l Z Length of any side Wall Wale, or =(A-N)P A study @f the values outlined in the above table will show that some panels maybe said to be interchangeable 'to permit the erection of forms 1 N non zo of `various dimensions and contours, as viewed from above. Moreover, by providing the wales of various lengths and shapes, they may be employed -for connecting any selected panels in whatever order the latter may be assembled. For example, should the building plan specify a continuous, straight wall, having nopartition-or extension i311, a side wall 'panel 3B maybe substitutedor the inside corner panels indicated at ll0^ .and HU" in Fig. 6 to provide a continuous inner mold wall 25. Likewise, whenever a right angle extension is required, one of the side wall panels 3l! is tonitted 'and a pair of the inside 'corner panels H0 substituted therefor to lform the intersection, after which side wallpanels and an end Wall panel S5 may be added to the panels lill to provide an extension of the proper length. As Vanother example, the 'corner` assembly indicated rat HQ and the -end iwall panel S5 `shown in LFig. l6v could be readily interchanged, if such a-change was desirable. Since the widths-oi` the several types of panels have constant relation- Ships t@ the algebraic sum 'o f the proposedwall thickness and Vthe LWidth of the Side Wall panels, the vertical 'edges of any `of Athe panels of the opposite mold walls and 26 always align transversely of the Wall cavity and it is, therefore,

unnecessary to provide panels having other than 'thesewidths 'toattain this result. This is, a :highly desirable ieature and an important improvement over previous types ofA demountable Aconcrete forms-wherein filler strips or adjustable velementsare employed for obtaining such a condition. In 'the present improved structure, it is impossible to 'mlsalign the opposite Wall panels ofthe inner and-outer moldwalls.

'It is to be noted 'that the vpresent improved formis'designed for use in 'molding concrete Walls off 'a particular standard thickness. As an example, iff-'a Walllof standard six inch thickness is to `:be produced, yand A dimension is 16 inches, then'B=`5 inches, D=1l inches and E=11 inches.

'It-will also be apparent that the present wall form is not intended to be adjustable for forming walls of'- different thickness and in this respect it is toibe `noted that `-if corner panel legs having Widths other than standardized dimensions were used to iprovide Wall lcavities odiiierent widths, it would notonly complicate thelassembly but require the use of special corner walesand other parts.

The method of assembling 'the wall panels to vproduce forms capable-of molding concrete walls of various lengths land angular characteristics, and the mode of disassembling A'the parts after ltheforins'have served'their useful purposeshould be lapparent 4lromithe foregoing specication and thus need not be explained further.

It will be observed from the foregoing that my improved wall form yis'eomposed of simple, light weight parts adapted for economical manufacture from' sheet metal and standard structural sections. 'Since the various parts are light in weight they may vbe conveniently transported and setup in, the desired location. As Aanother feature of improvement, the parts may be readily assembled without the usevof special tools and equipment andin a minimum'period of time and this results in-a substantial saving in the cost of formingthe concrete Walls. Since the form is of a 'demountable or knock-down nature, it may be 'quickly dismantled after 'the vconcrete has set and its parts 'moved to another location and assembled to provide a -form of the same or different shape. It is seen, therefore, vthat the irnproved form may be employed to great advantage `in expediting the mass production of homes and other buildings.

` It is within the concept of the present invention 'to employthe principle involved in erecting concrete forms to the building of hollow demountable wall structures which may be usedfln the construction of houses and otherbuildings.

Figj22'shows ysuch a hollow wall'structure wherein the smooth sheathing suriacesl of the various typesl of panels are kdisposed on the outside, instead 'of'lthe inside, ofthe structure, as in the embodiment ci the invention disclosed in Figs. 1 tom.` By'so positioningthe panels, the walls have snfiooth outer surfaces, it being Anoted Athat the Vangle iron ribs 35 or 3.6 of the panels and the wales AMyare disposed withinthe wall cavity I6!! which may be lledjwith a suitable/thermal insulation material, if desired. The structure shown in Fig. 22 may be modied in other respects also. For example, since the side'panels 3D are not subjected to Vlateral forces. which tend to cause 'them' to huleeloutwardly. it is unnecessary 'co-reinforce them from 'the outside and., there tore, the stud units 5,0 may .be made or single strips ofmetal Yof a width corresponding to the wall cavity |60 so as to act as spacers between the opposite side panels 30. The ends of the ..11 wales may be supported by the vertical studs 50 in the manner previously explained and their pins 'l2' are engageable in angularslots 38' in the ribs 32' of the wall panels 3U. In this embodiment, the slots 38' are arranged reversely, that is, with their vertical portions directed upwardly. By this construction, the several studs 50 and wales 10 may be assembled to provide a latticed framework, after which the wall panels may be mounted thereon by merely hooking them over the pins 'I2'. It is thus seen that the combination of elements similar to those shown and described in connection with the concrete form may also be utilized Ifor erecting demountable building walls or for pre-fabricating wall sections to expedite the construction of houses and other buildings.

While I have herein shown and described the improved wall form as embodied in a preferred construction and applied to use in a particular manner, by way of example, itwill be apparent that various modifications might be made therein without dep-artingvfrom the spirit of the invention. Consequently, I do not wish to be limited to the exact embodiment shown but desire to be afforded the full scope of the appended claims.

I claim as my invention:

1. A demountable form for molding poured concrete and the like comprising: inner and outer spaced mold walls deiining a wall `cavity therebetween forreceiving thev poured concrete, each of said mold walls including a plurality of wall panels adapted to be disposed on endA and each having a horizontal `ribl at its upper end and a vertical rib adjacent each lateral edge thereof, each of said .vertical ribs being adapted to abut the vertical rib of an adjacent panel and provided with vertically spaced slots adapted to align with the slots of the adjacent panel; a plurality of reinforcing stud units each having vertical members adapted-to be disposed against the outer surfaces ofselected opposite wall panels of said mold walls and a horizontal connecting memf ber extending across the upper end of the wall cavity, said verticalmembers also having slots for receiving said horizontal ribs of said wall panels; tie means for tying said vertical members of each stud unit together; and a plurality of horizontal wales adapted to span portions of at least two adjacent wall panels'with their ends terminating at the sides of said Verticalmembers of ysaid stud units, -saidwales having longitudinally lspaced means engageable in said slots of said wall panels toretain said panels in abutting relationship. y

2. A Ademountable wall structure, comprising: a. plurality of panelsradapted-to be stood on end and placed in abutting; relationship; vertical reinforcing ribs'secured to and extending adjacent to the verticaledges of each panel, the reinforc-l ing ribs of adjacent panels being adapted to abut and each rib being provided with a plurality of vertically, spaced angular slots;` and horizontal wales -having longitudinally-spaced slots each vextending adjacent to the vertical edges of each panel, the reinforcing ribs of adjacent panels being adapted to abut and each rib being provided with a plurality of vertically spaced angular slots; a plurality of stud units disposed against the inner surfaces of two opposite panels and having portions extending between said panels for maintaining said panels of said walls in spaced, parallel relation; horizontal wales having longitudinally spaced slots each adapted to receive the abutting ribs of at least two adjacent panels and provided with locking pins engageable in said angular slots to lock said panels in connected, abutting relationship; and vertically spaced means on said stud units adapted to interlock with` said wales to restrain said walesfrom horizontal or vertical movement.

4. A demountable hollow wall structure, comprising: inner and outer spaced walls, each of said walls including a plurality of panels adapted to be stood on end and placed in abutting relationship; vertical reinforcing ribs secured to and extending adjacent to the vertical edges of each panel, the reinforcing ribs of adjacent panels being adapted to abut and each rib being provided with a plurality of vertically spaced angular slots; a plurality of stud units disposed against the inner surfaces of two opposite panels, each stud unit having portions extending between said panels and vertically spaced retaining means; and horizontal wales having longitudinally spaced slots each adapted to receive the abutting ribs of at least two adjacent panels and provided with locking pins engageable in said angular slots to lock said panels in connected, abutting relationship, said retaining means being engageable with said wales to restrain said stud units 'from horizontal or vertical movement.

5. A demountable hollow wall structure, comprising: innerand outer spaced walls, each of said walls including a plurality of side wall panels, said inner wall including inside corner panels, and said outer wall including outside corner panels, any ofsaid above named panels being adapted to be stood on end and placed in abutting relationship; vertical reinforcing ribs secured to and extending adjacent to the vertical edges of each panel, the reinforcing ribs of adjacent panels being adapted to abut each other; a plurality of stud units disposed against the inner surfaces of said walls to maintain the walls in spaced relationship; a plurality of side wall wales, inside corner wales" and outside corner wales, each having longitudinally-spaced slots adapted to receive theabutting ribs of at least two adjacent panels and provided with locking pins for locking said panels in connected, abutting relationship.

' HAYDEN C. HILL.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 955,800 Hotchkiss Apr. 19, 1910 1,621,563 Stevens Mar. 22, 1927 1,640,997 Hollister Aug. 30, 1927 1,658,681 Jordan et al Feb. 7, 1928 1,864,444 Kronen June 2l, 1932 1,901,392 Frederick Mar. 14, 1933 2,017,553 Troiel Oct. 15, 1935 2,358,975 Hillberg Sept. 26, 1944 

